Toothbrush



FIG. 1 is a top, left side, and front perspective view of a first embodiment of a toothbrush, showing my design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a front and left side perspective view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line showing in the Figures illustrates a portion of the toothbrush which forms no part of the claimed design. 

CLAIM The ornamental design for a toothbrush, as shown and described. 